Syringe



Dec.'10, 1957V H. c. HOFFMAN ETAL- SYRINGE Filed Nav. "I, r1955 United States Patent SYRINGE Herbert 0. Hoffman and Western Wiles, Ashland, Ohio, assignors to The Faultless Rubber Company, Ashland, Ohio, a corporation of Ohio Application November 7, 1955, Serial No. 545,184

8 Claims. (Cl. 12S-231) This invention relates to syringes, ,especially to syringes and syringe bulbs usually used for feminine hygene purposes.

Heretofore there have been various types of syringe bulbs provided and several types of feminine syringe bulbs have been commercially made and sold in large quantities. Recently one new type of such syringe has been a bottom or base filling type of a syringe and this invention particularly relates to bulbs of such type and it is especially adapted for such use, although it may have other purposes.

One problem involved in use of such syringes is that of filling the bulbs conveniently and completely and the bulbs have provided two or three types of seals forclosing the openings in the base of the bulb.

It is the general object of the present invention to provide a new and improved type of a syringe of the class referred to wherein an inexpensive but effective type of a closure means has been provided for the base opening in the syringe bulb. v

Another object of the invention is to use flexible flanges on a filling neck or opening portion of a syringe bulb for positioning a closure plug in the filling opening in sealing engagement therewith.

Another object of the -invention is to use a flexible sealing flange on a syringe bulb in combination with a flexible flange on a closure plug for a removable. but sealed engagement between such flange means.

Yet another object of the invention is to provide a pair of annular, axially spaced recesses in a neck portion of a syringe bulb for positioning a retaining basket within the bulb and for engaging closure or sealing means for the bulb.

The foregoing and other objects and advantages of the invention will be made more apparent as the specification proceeds.

Attention is now directed to the accompanying drawings wherein one currently preferred embodiment of the invention is shown, and wherein:

Fig. 1 is an elevation, partially broken away and shown in section of a syringe of the invention;

Fig. 2 is an enlarged fragmentary vertical section of the base portion of the syringe of Fig. 1; and

Fig. 3 is a bottom plan of the syringe of Fig. l.

When referring to corresponding parts shown in the drawings and referred to in the specification, corresponding numerals are used to facilitate comparison between such parts.

The present invention in general relates to a syringe comprising a resilient bulb having a neck opening therein and a flat base end with an opening therein. A spout is removably secured in the neck opening of the bulb, while the base opening has an inwardly directed neck or sleeve portion therearound with a pair of axially spaced, parallel annular recesses therein, a plug having a flexible flange thereon is positioned in the base opening with the flange removably engaged with the outermost of the recesses for sealing such base opening, and an apertured 2,815,753 Patented Dec. 10, 1957 ICC metal basket having an edge flange thereon engages the inner of the recesses to be positioned thereby and extend into the bulb.

With reference to the details of the construction shown in the drawings, a syringe is indicated as a whole by the numeral 1 and it includes a resilient or flexible bulb 2 having a neck 3 thereon with a neck opening 4 being provided therein. A conventional discharge spout 5 is provided in removable engagement with the neck opening 4 by suitable inter-engaging flange means provided on the different members so that a removable connection is provided therebetween. A removable cap 5a is provided on the apertured end of the discharge spout 5.

This bulb 2 has a flat base portion 6 and a generally conically shaped, inwardly directed sleeve or neck 7 is provided in such flat base 6 to outline or dene a filling opening 8 provided for the bulb 2.

As an important feature of the present invention, the sleeve or neck 7 is provided with a pair of axiallyvspaced, annular recesses 9 and 10 in the wall of the lling opening 8.

Fig. 2 of the drawing shows that a radially inwardly directed shoulder 11 is provided on the axially inner end of the inner recess 9, which shoulder actually defines the narrowest section of the opening 8 and` an apertured basket or cup-like member 12 has a flange 13 provided on the axially outer end thereof. This flange 13 can be forced down into the opening 8 in the base portion of the bulb 2 until such flange 13 seats in the recess 9 and snugly positions the basket 12 within the bulb Z so that an antiseptic tablet or other medicament can be positioned in the basket 12, if desired.

The smallest diameter portion of the opening 8 adjacent the shoulder 11 may also engage the cylindrical portion of the basket 12 to aid in positioning it in the bulb, if desired.

Another novel portion of the syringe 1 resides in the specific formation of the recess 10 and its association with a suitable closure or plug 14 used for sealing the opening 8. This plug 14 has a flexible flange 15 extending therefrom and normally both the blub 2 and plug 14 are made from similar rubber, or rubber-like material so that they will have the desired flexibility and resiliency and so that the flexible flange 15 can be worked or sprung beyond a radially inwardly directed flexible lip or flange 16 that extends radiallly inwardly of the opening 8l at -the axially outer portion thereof in a direction normal to the longitudinal axis of such opening. The opposite walls of this lip 16 are paralleland extend normal tothe axis of the filling opening 8.

The desired sealing engagement between the flexible flange 15 of the closure or plug 14 and the lip 16 is facilitated by forming the axially inner wall or portion 17 of the recess 10 of a shape to extend both radially and axially inwardly of the bulb 2 at a greater angle than the adjacent axially inner surface of the flexible flange 15, as best indicated in Fig. 2 of the drawing. Thus the axially inner wall of the recess 10 urges the flexible flange 15 on the closure or plug 14 axially outwardly of the bulb and this aids in sealing the plug in the opening S. The outer diameter of the flexible flange 15 is such that it is snugly received in the recess 10.

It will be noted that the entire plug 14 is received within the peripheral contour of the bulb 2 and that such plug has a conveniently engageable portion on the outer end thereof to facilitate inserting the plug and removing it from engagement with the bulb 2.

It will be realized that the bulb 2 normally is made by some type of a molding or casting operation and that the recesses 9 and 10 as well as other portions of the bulb would all be made as an integral unit. The plug 14 is particularly easy to engage with the opening 8 as outlined hereinabove when the -different members are wet, but even without such moisture the ange 15 can be worked into the recess 9 or be pulled therefrom, as desired, so that a sturdy but inexpensive type of a seal has been provided for the syringe and the objects of the invention are thought to be achieved.

While one complete embodiment of the invention has been disclosed herein, it will be appreciated that modication of this particular embodiment of the invention may be resorted to without departing from the scope of the invention as defined in the appended claims.

What is claimed is:

1. A flexible syringe comprising a resilient bulb having a neck opening therein and having a flat base end, a spout removably secured in said neck opening, said base end of said bulb having an opening therein with a conically shaped inwardly directed sleeve therearound, said sleeve having a pair of parallel annular recesses therein, a plug having a tlexible iange thereon engaging and lliug said opening with said flange in the axially outer of said recesses, and an apertured metal basket with an edge iiange thereon engaging the inner of said recesses to be positioned thereby and extend into said bulb.

2. A syringe comprising a resilient bulb having a neck opening therein and having a at base end, a spout removably secured in said neck opening, said base end of said bulb having an opening therein with a conically shaped inwardly directed sleeve therearound, said sleeve having an annular recess therein, which recess has a tlexible axially outer wall, and a plug having a flexible iiange thereon positioned in said opening with said flange in sealing engagement with said recess, said plug having a knob thereon positioned within the periphery of said at base.

3. A syringe comprising a resilient bulb having a neck opening therein and having a base end, a spout removably secured in said neck opening, said base end of said bulb having an opening therein with a conically shaped inwardly directed sleeve therearound, said sleeve having an annular recess therein and a plug having a flexible ange thereon positioned in said opening with said tlange removably received in said recess to seal the plug to said bulb.

4. A syringe comprising a resilient bulb having an opening extending therethrough, said bulb opening have ing a pair of axially spaced annular recesses therein the axially outer recess having an outer wall which is a narrow ilexible lip normal to the axis of said opening and the inner wall of which extends both axially and radially inwardly of said bulb, a closure having a flexible flange thereon seated in said outer recess, and an apertured basket with a ange thereon engaging said axially inner recess to be positioned thereby within said bulb.

5. A flexible syringe comprising a resilient bulb having an opening extending therethrough, said bulb opening having an annular recess therein the axially outer wall of which is a narrow flexible lip normal to the axis of said opening and the inner wall of which extends both axially and radially inwardly of said bulb, and a closure having a flexible flange thereon seated in said recess to close said opening, said llexible flange having a tapered axially inner edge to engage said tapered inner wall of said recess to aid in sealing said iiexible ange in said recess.

6. A syringe comprising a resilient bulb having a neck opening therein and having a base end, a spout removably secured in said neck opening, said base end of said bulb having an opening therein with a conically shaped inwardly directed sleeve therearound, said sleeve having an annular recess therein which recess has a flexible axially outer wall, and a plug having a ilexible ange thereon positioned in said opening with said ilange in sealing engagement with said recess, said plug having a knob thereon positioned within the periphery of said flat base.

7. In a syringe, a resilient bulb having an opening therein with an inwardly directed sleeve therearound, said sleeve having an annular recess therein with a flexible lip extending around said opening at the axially outer edge of said recess, and a plug having a flexible iiange thereon positioned in said opening with said flange removably received in said recess to seal the plug to said bulb, said bulb having a sealing wall provided in said sleeve at said recess and at immediately adjacent axially inner portions of said opening whereby said flexible flange can be positioned intermediate said lip and sealing wall to close and seal said opening.

8. In a syringe, a resilient bulb having an opening therein with an inwardly directed sleeve therearound, said sleeve having an annular recess therein with a iiexible lip extending around said opening at the axially outer edge of said recess, and a plug having a flexible harige thereon positioned in said opening with said ange removably received in said recess to seal the plug to said bulb, said flexible ange having a larger diameter than the inner diameter of said iiexible lip but being adapted to be worked over and past said flexible lip into sealing engagement with the portion of said sleeve defining said recess.

References Cited in the le of this patent UNITED STATES PATENTS 2,739,592 Wiles Mar. 27, 1956 FOREIGN PATENTS 425,764 Germany Mar. l, 1926 452,550 Great Britain Aug. 25, 1936 

